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<pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a>
<span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one or more<a name="line.2"></a>
<span class="sourceLineNo">003</span> * contributor license agreements.  See the NOTICE file distributed with<a name="line.3"></a>
<span class="sourceLineNo">004</span> * this work for additional information regarding copyright ownership.<a name="line.4"></a>
<span class="sourceLineNo">005</span> * The ASF licenses this file to You under the Apache License, Version 2.0<a name="line.5"></a>
<span class="sourceLineNo">006</span> * (the "License"); you may not use this file except in compliance with<a name="line.6"></a>
<span class="sourceLineNo">007</span> * the License.  You may obtain a copy of the License at<a name="line.7"></a>
<span class="sourceLineNo">008</span> *<a name="line.8"></a>
<span class="sourceLineNo">009</span> *      http://www.apache.org/licenses/LICENSE-2.0<a name="line.9"></a>
<span class="sourceLineNo">010</span> *<a name="line.10"></a>
<span class="sourceLineNo">011</span> * Unless required by applicable law or agreed to in writing, software<a name="line.11"></a>
<span class="sourceLineNo">012</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.12"></a>
<span class="sourceLineNo">013</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.13"></a>
<span class="sourceLineNo">014</span> * See the License for the specific language governing permissions and<a name="line.14"></a>
<span class="sourceLineNo">015</span> * limitations under the License.<a name="line.15"></a>
<span class="sourceLineNo">016</span> */<a name="line.16"></a>
<span class="sourceLineNo">017</span><a name="line.17"></a>
<span class="sourceLineNo">018</span>package org.apache.commons.net.smtp;<a name="line.18"></a>
<span class="sourceLineNo">019</span><a name="line.19"></a>
<span class="sourceLineNo">020</span>import java.io.IOException;<a name="line.20"></a>
<span class="sourceLineNo">021</span>import java.net.InetAddress;<a name="line.21"></a>
<span class="sourceLineNo">022</span>import java.security.InvalidKeyException;<a name="line.22"></a>
<span class="sourceLineNo">023</span>import java.security.NoSuchAlgorithmException;<a name="line.23"></a>
<span class="sourceLineNo">024</span>import java.security.spec.InvalidKeySpecException;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import javax.crypto.Mac;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import javax.crypto.spec.SecretKeySpec;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import javax.net.ssl.SSLContext;<a name="line.27"></a>
<span class="sourceLineNo">028</span><a name="line.28"></a>
<span class="sourceLineNo">029</span>import org.apache.commons.net.util.Base64;<a name="line.29"></a>
<span class="sourceLineNo">030</span><a name="line.30"></a>
<span class="sourceLineNo">031</span><a name="line.31"></a>
<span class="sourceLineNo">032</span>/**<a name="line.32"></a>
<span class="sourceLineNo">033</span> * An SMTP Client class with authentication support (RFC4954).<a name="line.33"></a>
<span class="sourceLineNo">034</span> *<a name="line.34"></a>
<span class="sourceLineNo">035</span> * @see SMTPClient<a name="line.35"></a>
<span class="sourceLineNo">036</span> * @since 3.0<a name="line.36"></a>
<span class="sourceLineNo">037</span> */<a name="line.37"></a>
<span class="sourceLineNo">038</span>public class AuthenticatingSMTPClient extends SMTPSClient<a name="line.38"></a>
<span class="sourceLineNo">039</span>{<a name="line.39"></a>
<span class="sourceLineNo">040</span>    /**<a name="line.40"></a>
<span class="sourceLineNo">041</span>     * The default AuthenticatingSMTPClient constructor.<a name="line.41"></a>
<span class="sourceLineNo">042</span>     * Creates a new Authenticating SMTP Client.<a name="line.42"></a>
<span class="sourceLineNo">043</span>     * @throws NoSuchAlgorithmException<a name="line.43"></a>
<span class="sourceLineNo">044</span>     */<a name="line.44"></a>
<span class="sourceLineNo">045</span>    public AuthenticatingSMTPClient() throws NoSuchAlgorithmException<a name="line.45"></a>
<span class="sourceLineNo">046</span>    {<a name="line.46"></a>
<span class="sourceLineNo">047</span>        super();<a name="line.47"></a>
<span class="sourceLineNo">048</span>    }<a name="line.48"></a>
<span class="sourceLineNo">049</span><a name="line.49"></a>
<span class="sourceLineNo">050</span>    /**<a name="line.50"></a>
<span class="sourceLineNo">051</span>     * Overloaded constructor that takes a protocol specification<a name="line.51"></a>
<span class="sourceLineNo">052</span>     * @param protocol The protocol to use<a name="line.52"></a>
<span class="sourceLineNo">053</span>     * @throws NoSuchAlgorithmException<a name="line.53"></a>
<span class="sourceLineNo">054</span>     */<a name="line.54"></a>
<span class="sourceLineNo">055</span>    public AuthenticatingSMTPClient(String protocol) throws NoSuchAlgorithmException {<a name="line.55"></a>
<span class="sourceLineNo">056</span>        super(protocol);<a name="line.56"></a>
<span class="sourceLineNo">057</span>    }<a name="line.57"></a>
<span class="sourceLineNo">058</span><a name="line.58"></a>
<span class="sourceLineNo">059</span>    /**<a name="line.59"></a>
<span class="sourceLineNo">060</span>     * Overloaded constructor that takes a protocol specification and the implicit argument<a name="line.60"></a>
<span class="sourceLineNo">061</span>     * @param proto the protocol.<a name="line.61"></a>
<span class="sourceLineNo">062</span>     * @param implicit The security mode, {@code true} for implicit, {@code false} for explicit<a name="line.62"></a>
<span class="sourceLineNo">063</span>     * @since 3.3<a name="line.63"></a>
<span class="sourceLineNo">064</span>     */<a name="line.64"></a>
<span class="sourceLineNo">065</span>    public AuthenticatingSMTPClient(String proto, boolean implicit)<a name="line.65"></a>
<span class="sourceLineNo">066</span>    {<a name="line.66"></a>
<span class="sourceLineNo">067</span>      super(proto, implicit);<a name="line.67"></a>
<span class="sourceLineNo">068</span>    }<a name="line.68"></a>
<span class="sourceLineNo">069</span><a name="line.69"></a>
<span class="sourceLineNo">070</span>    /**<a name="line.70"></a>
<span class="sourceLineNo">071</span>     * Overloaded constructor that takes the protocol specification, the implicit argument and encoding<a name="line.71"></a>
<span class="sourceLineNo">072</span>     * @param proto the protocol.<a name="line.72"></a>
<span class="sourceLineNo">073</span>     * @param implicit The security mode, {@code true} for implicit, {@code false} for explicit<a name="line.73"></a>
<span class="sourceLineNo">074</span>     * @param encoding the encoding<a name="line.74"></a>
<span class="sourceLineNo">075</span>     * @since 3.3<a name="line.75"></a>
<span class="sourceLineNo">076</span>     */<a name="line.76"></a>
<span class="sourceLineNo">077</span>    public AuthenticatingSMTPClient(String proto, boolean implicit, String encoding)<a name="line.77"></a>
<span class="sourceLineNo">078</span>    {<a name="line.78"></a>
<span class="sourceLineNo">079</span>      super(proto, implicit, encoding);<a name="line.79"></a>
<span class="sourceLineNo">080</span>    }<a name="line.80"></a>
<span class="sourceLineNo">081</span><a name="line.81"></a>
<span class="sourceLineNo">082</span>    /**<a name="line.82"></a>
<span class="sourceLineNo">083</span>     * Overloaded constructor that takes the implicit argument, and using {@link #DEFAULT_PROTOCOL} i.e. TLS<a name="line.83"></a>
<span class="sourceLineNo">084</span>     * @param implicit The security mode, {@code true} for implicit, {@code false} for explicit<a name="line.84"></a>
<span class="sourceLineNo">085</span>     * @param ctx A pre-configured SSL Context.<a name="line.85"></a>
<span class="sourceLineNo">086</span>     * @since 3.3<a name="line.86"></a>
<span class="sourceLineNo">087</span>     */<a name="line.87"></a>
<span class="sourceLineNo">088</span>    public AuthenticatingSMTPClient(boolean implicit, SSLContext ctx)<a name="line.88"></a>
<span class="sourceLineNo">089</span>    {<a name="line.89"></a>
<span class="sourceLineNo">090</span>      super(implicit, ctx);<a name="line.90"></a>
<span class="sourceLineNo">091</span>    }<a name="line.91"></a>
<span class="sourceLineNo">092</span><a name="line.92"></a>
<span class="sourceLineNo">093</span>    /**<a name="line.93"></a>
<span class="sourceLineNo">094</span>     * Overloaded constructor that takes a protocol specification and encoding<a name="line.94"></a>
<span class="sourceLineNo">095</span>     * @param protocol The protocol to use<a name="line.95"></a>
<span class="sourceLineNo">096</span>     * @param encoding The encoding to use<a name="line.96"></a>
<span class="sourceLineNo">097</span>     * @throws NoSuchAlgorithmException<a name="line.97"></a>
<span class="sourceLineNo">098</span>     * @since 3.3<a name="line.98"></a>
<span class="sourceLineNo">099</span>     */<a name="line.99"></a>
<span class="sourceLineNo">100</span>    public AuthenticatingSMTPClient(String protocol, String encoding) throws NoSuchAlgorithmException {<a name="line.100"></a>
<span class="sourceLineNo">101</span>        super(protocol, false, encoding);<a name="line.101"></a>
<span class="sourceLineNo">102</span>    }<a name="line.102"></a>
<span class="sourceLineNo">103</span><a name="line.103"></a>
<span class="sourceLineNo">104</span>    /***<a name="line.104"></a>
<span class="sourceLineNo">105</span>     * A convenience method to send the ESMTP EHLO command to the server,<a name="line.105"></a>
<span class="sourceLineNo">106</span>     * receive the reply, and return the reply code.<a name="line.106"></a>
<span class="sourceLineNo">107</span>     * &lt;p&gt;<a name="line.107"></a>
<span class="sourceLineNo">108</span>     * @param hostname The hostname of the sender.<a name="line.108"></a>
<span class="sourceLineNo">109</span>     * @return The reply code received from the server.<a name="line.109"></a>
<span class="sourceLineNo">110</span>     * @exception SMTPConnectionClosedException<a name="line.110"></a>
<span class="sourceLineNo">111</span>     *      If the SMTP server prematurely closes the connection as a result<a name="line.111"></a>
<span class="sourceLineNo">112</span>     *      of the client being idle or some other reason causing the server<a name="line.112"></a>
<span class="sourceLineNo">113</span>     *      to send SMTP reply code 421.  This exception may be caught either<a name="line.113"></a>
<span class="sourceLineNo">114</span>     *      as an IOException or independently as itself.<a name="line.114"></a>
<span class="sourceLineNo">115</span>     * @exception IOException  If an I/O error occurs while either sending the<a name="line.115"></a>
<span class="sourceLineNo">116</span>     *      command or receiving the server reply.<a name="line.116"></a>
<span class="sourceLineNo">117</span>     ***/<a name="line.117"></a>
<span class="sourceLineNo">118</span>    public int ehlo(String hostname) throws IOException<a name="line.118"></a>
<span class="sourceLineNo">119</span>    {<a name="line.119"></a>
<span class="sourceLineNo">120</span>        return sendCommand(SMTPCommand.EHLO, hostname);<a name="line.120"></a>
<span class="sourceLineNo">121</span>    }<a name="line.121"></a>
<span class="sourceLineNo">122</span><a name="line.122"></a>
<span class="sourceLineNo">123</span>    /***<a name="line.123"></a>
<span class="sourceLineNo">124</span>     * Login to the ESMTP server by sending the EHLO command with the<a name="line.124"></a>
<span class="sourceLineNo">125</span>     * given hostname as an argument.  Before performing any mail commands,<a name="line.125"></a>
<span class="sourceLineNo">126</span>     * you must first login.<a name="line.126"></a>
<span class="sourceLineNo">127</span>     * &lt;p&gt;<a name="line.127"></a>
<span class="sourceLineNo">128</span>     * @param hostname  The hostname with which to greet the SMTP server.<a name="line.128"></a>
<span class="sourceLineNo">129</span>     * @return True if successfully completed, false if not.<a name="line.129"></a>
<span class="sourceLineNo">130</span>     * @exception SMTPConnectionClosedException<a name="line.130"></a>
<span class="sourceLineNo">131</span>     *      If the SMTP server prematurely closes the connection as a result<a name="line.131"></a>
<span class="sourceLineNo">132</span>     *      of the client being idle or some other reason causing the server<a name="line.132"></a>
<span class="sourceLineNo">133</span>     *      to send SMTP reply code 421.  This exception may be caught either<a name="line.133"></a>
<span class="sourceLineNo">134</span>     *      as an IOException or independently as itself.<a name="line.134"></a>
<span class="sourceLineNo">135</span>     * @exception IOException  If an I/O error occurs while either sending a<a name="line.135"></a>
<span class="sourceLineNo">136</span>     *      command to the server or receiving a reply from the server.<a name="line.136"></a>
<span class="sourceLineNo">137</span>     ***/<a name="line.137"></a>
<span class="sourceLineNo">138</span>    public boolean elogin(String hostname) throws IOException<a name="line.138"></a>
<span class="sourceLineNo">139</span>    {<a name="line.139"></a>
<span class="sourceLineNo">140</span>        return SMTPReply.isPositiveCompletion(ehlo(hostname));<a name="line.140"></a>
<span class="sourceLineNo">141</span>    }<a name="line.141"></a>
<span class="sourceLineNo">142</span><a name="line.142"></a>
<span class="sourceLineNo">143</span><a name="line.143"></a>
<span class="sourceLineNo">144</span>    /***<a name="line.144"></a>
<span class="sourceLineNo">145</span>     * Login to the ESMTP server by sending the EHLO command with the<a name="line.145"></a>
<span class="sourceLineNo">146</span>     * client hostname as an argument.  Before performing any mail commands,<a name="line.146"></a>
<span class="sourceLineNo">147</span>     * you must first login.<a name="line.147"></a>
<span class="sourceLineNo">148</span>     * &lt;p&gt;<a name="line.148"></a>
<span class="sourceLineNo">149</span>     * @return True if successfully completed, false if not.<a name="line.149"></a>
<span class="sourceLineNo">150</span>     * @exception SMTPConnectionClosedException<a name="line.150"></a>
<span class="sourceLineNo">151</span>     *      If the SMTP server prematurely closes the connection as a result<a name="line.151"></a>
<span class="sourceLineNo">152</span>     *      of the client being idle or some other reason causing the server<a name="line.152"></a>
<span class="sourceLineNo">153</span>     *      to send SMTP reply code 421.  This exception may be caught either<a name="line.153"></a>
<span class="sourceLineNo">154</span>     *      as an IOException or independently as itself.<a name="line.154"></a>
<span class="sourceLineNo">155</span>     * @exception IOException  If an I/O error occurs while either sending a<a name="line.155"></a>
<span class="sourceLineNo">156</span>     *      command to the server or receiving a reply from the server.<a name="line.156"></a>
<span class="sourceLineNo">157</span>     ***/<a name="line.157"></a>
<span class="sourceLineNo">158</span>    public boolean elogin() throws IOException<a name="line.158"></a>
<span class="sourceLineNo">159</span>    {<a name="line.159"></a>
<span class="sourceLineNo">160</span>        String name;<a name="line.160"></a>
<span class="sourceLineNo">161</span>        InetAddress host;<a name="line.161"></a>
<span class="sourceLineNo">162</span><a name="line.162"></a>
<span class="sourceLineNo">163</span>        host = getLocalAddress();<a name="line.163"></a>
<span class="sourceLineNo">164</span>        name = host.getHostName();<a name="line.164"></a>
<span class="sourceLineNo">165</span><a name="line.165"></a>
<span class="sourceLineNo">166</span>        if (name == null) {<a name="line.166"></a>
<span class="sourceLineNo">167</span>            return false;<a name="line.167"></a>
<span class="sourceLineNo">168</span>        }<a name="line.168"></a>
<span class="sourceLineNo">169</span><a name="line.169"></a>
<span class="sourceLineNo">170</span>        return SMTPReply.isPositiveCompletion(ehlo(name));<a name="line.170"></a>
<span class="sourceLineNo">171</span>    }<a name="line.171"></a>
<span class="sourceLineNo">172</span><a name="line.172"></a>
<span class="sourceLineNo">173</span>    /***<a name="line.173"></a>
<span class="sourceLineNo">174</span>     * Returns the integer values of the enhanced reply code of the last SMTP reply.<a name="line.174"></a>
<span class="sourceLineNo">175</span>     * @return The integer values of the enhanced reply code of the last SMTP reply.<a name="line.175"></a>
<span class="sourceLineNo">176</span>     *  First digit is in the first array element.<a name="line.176"></a>
<span class="sourceLineNo">177</span>     ***/<a name="line.177"></a>
<span class="sourceLineNo">178</span>    public int[] getEnhancedReplyCode()<a name="line.178"></a>
<span class="sourceLineNo">179</span>    {<a name="line.179"></a>
<span class="sourceLineNo">180</span>        String reply = getReplyString().substring(4);<a name="line.180"></a>
<span class="sourceLineNo">181</span>        String[] parts = reply.substring(0, reply.indexOf(' ')).split ("\\.");<a name="line.181"></a>
<span class="sourceLineNo">182</span>        int[] res = new int[parts.length];<a name="line.182"></a>
<span class="sourceLineNo">183</span>        for (int i = 0; i &lt; parts.length; i++)<a name="line.183"></a>
<span class="sourceLineNo">184</span>        {<a name="line.184"></a>
<span class="sourceLineNo">185</span>            res[i] = Integer.parseInt (parts[i]);<a name="line.185"></a>
<span class="sourceLineNo">186</span>        }<a name="line.186"></a>
<span class="sourceLineNo">187</span>        return res;<a name="line.187"></a>
<span class="sourceLineNo">188</span>    }<a name="line.188"></a>
<span class="sourceLineNo">189</span><a name="line.189"></a>
<span class="sourceLineNo">190</span>    /***<a name="line.190"></a>
<span class="sourceLineNo">191</span>     * Authenticate to the SMTP server by sending the AUTH command with the<a name="line.191"></a>
<span class="sourceLineNo">192</span>     * selected mechanism, using the given username and the given password.<a name="line.192"></a>
<span class="sourceLineNo">193</span>     *<a name="line.193"></a>
<span class="sourceLineNo">194</span>     * @param method the method to use, one of the {@link AuthenticatingSMTPClient.AUTH_METHOD} enum values<a name="line.194"></a>
<span class="sourceLineNo">195</span>     * @param username the user name.<a name="line.195"></a>
<span class="sourceLineNo">196</span>     *        If the method is XOAUTH, then this is used as the plain text oauth protocol parameter string<a name="line.196"></a>
<span class="sourceLineNo">197</span>     *        which is Base64-encoded for transmission.<a name="line.197"></a>
<span class="sourceLineNo">198</span>     * @param password the password for the username.<a name="line.198"></a>
<span class="sourceLineNo">199</span>     *        Ignored for XOAUTH.<a name="line.199"></a>
<span class="sourceLineNo">200</span>     *<a name="line.200"></a>
<span class="sourceLineNo">201</span>     * @return True if successfully completed, false if not.<a name="line.201"></a>
<span class="sourceLineNo">202</span>     * @exception SMTPConnectionClosedException<a name="line.202"></a>
<span class="sourceLineNo">203</span>     *      If the SMTP server prematurely closes the connection as a result<a name="line.203"></a>
<span class="sourceLineNo">204</span>     *      of the client being idle or some other reason causing the server<a name="line.204"></a>
<span class="sourceLineNo">205</span>     *      to send SMTP reply code 421.  This exception may be caught either<a name="line.205"></a>
<span class="sourceLineNo">206</span>     *      as an IOException or independently as itself.<a name="line.206"></a>
<span class="sourceLineNo">207</span>     * @exception IOException  If an I/O error occurs while either sending a<a name="line.207"></a>
<span class="sourceLineNo">208</span>     *      command to the server or receiving a reply from the server.<a name="line.208"></a>
<span class="sourceLineNo">209</span>     * @exception NoSuchAlgorithmException If the CRAM hash algorithm<a name="line.209"></a>
<span class="sourceLineNo">210</span>     *      cannot be instantiated by the Java runtime system.<a name="line.210"></a>
<span class="sourceLineNo">211</span>     * @exception InvalidKeyException If the CRAM hash algorithm<a name="line.211"></a>
<span class="sourceLineNo">212</span>     *      failed to use the given password.<a name="line.212"></a>
<span class="sourceLineNo">213</span>     * @exception InvalidKeySpecException If the CRAM hash algorithm<a name="line.213"></a>
<span class="sourceLineNo">214</span>     *      failed to use the given password.<a name="line.214"></a>
<span class="sourceLineNo">215</span>     ***/<a name="line.215"></a>
<span class="sourceLineNo">216</span>    public boolean auth(AuthenticatingSMTPClient.AUTH_METHOD method,<a name="line.216"></a>
<span class="sourceLineNo">217</span>                        String username, String password)<a name="line.217"></a>
<span class="sourceLineNo">218</span>                        throws IOException, NoSuchAlgorithmException,<a name="line.218"></a>
<span class="sourceLineNo">219</span>                        InvalidKeyException, InvalidKeySpecException<a name="line.219"></a>
<span class="sourceLineNo">220</span>    {<a name="line.220"></a>
<span class="sourceLineNo">221</span>        if (!SMTPReply.isPositiveIntermediate(sendCommand(SMTPCommand.AUTH,<a name="line.221"></a>
<span class="sourceLineNo">222</span>                AUTH_METHOD.getAuthName(method)))) {<a name="line.222"></a>
<span class="sourceLineNo">223</span>            return false;<a name="line.223"></a>
<span class="sourceLineNo">224</span>        }<a name="line.224"></a>
<span class="sourceLineNo">225</span><a name="line.225"></a>
<span class="sourceLineNo">226</span>        if (method.equals(AUTH_METHOD.PLAIN))<a name="line.226"></a>
<span class="sourceLineNo">227</span>        {<a name="line.227"></a>
<span class="sourceLineNo">228</span>            // the server sends an empty response ("334 "), so we don't have to read it.<a name="line.228"></a>
<span class="sourceLineNo">229</span>            return SMTPReply.isPositiveCompletion(sendCommand(<a name="line.229"></a>
<span class="sourceLineNo">230</span>                    Base64.encodeBase64StringUnChunked(("\000" + username + "\000" + password).getBytes(getCharsetName())) // Java 1.6 can use getCharset()<a name="line.230"></a>
<span class="sourceLineNo">231</span>                ));<a name="line.231"></a>
<span class="sourceLineNo">232</span>        }<a name="line.232"></a>
<span class="sourceLineNo">233</span>        else if (method.equals(AUTH_METHOD.CRAM_MD5))<a name="line.233"></a>
<span class="sourceLineNo">234</span>        {<a name="line.234"></a>
<span class="sourceLineNo">235</span>            // get the CRAM challenge<a name="line.235"></a>
<span class="sourceLineNo">236</span>            byte[] serverChallenge = Base64.decodeBase64(getReplyString().substring(4).trim());<a name="line.236"></a>
<span class="sourceLineNo">237</span>            // get the Mac instance<a name="line.237"></a>
<span class="sourceLineNo">238</span>            Mac hmac_md5 = Mac.getInstance("HmacMD5");<a name="line.238"></a>
<span class="sourceLineNo">239</span>            hmac_md5.init(new SecretKeySpec(password.getBytes(getCharsetName()), "HmacMD5")); // Java 1.6 can use getCharset()<a name="line.239"></a>
<span class="sourceLineNo">240</span>            // compute the result:<a name="line.240"></a>
<span class="sourceLineNo">241</span>            byte[] hmacResult = _convertToHexString(hmac_md5.doFinal(serverChallenge)).getBytes(getCharsetName()); // Java 1.6 can use getCharset()<a name="line.241"></a>
<span class="sourceLineNo">242</span>            // join the byte arrays to form the reply<a name="line.242"></a>
<span class="sourceLineNo">243</span>            byte[] usernameBytes = username.getBytes(getCharsetName()); // Java 1.6 can use getCharset()<a name="line.243"></a>
<span class="sourceLineNo">244</span>            byte[] toEncode = new byte[usernameBytes.length + 1 /* the space */ + hmacResult.length];<a name="line.244"></a>
<span class="sourceLineNo">245</span>            System.arraycopy(usernameBytes, 0, toEncode, 0, usernameBytes.length);<a name="line.245"></a>
<span class="sourceLineNo">246</span>            toEncode[usernameBytes.length] = ' ';<a name="line.246"></a>
<span class="sourceLineNo">247</span>            System.arraycopy(hmacResult, 0, toEncode, usernameBytes.length + 1, hmacResult.length);<a name="line.247"></a>
<span class="sourceLineNo">248</span>            // send the reply and read the server code:<a name="line.248"></a>
<span class="sourceLineNo">249</span>            return SMTPReply.isPositiveCompletion(sendCommand(<a name="line.249"></a>
<span class="sourceLineNo">250</span>                Base64.encodeBase64StringUnChunked(toEncode)));<a name="line.250"></a>
<span class="sourceLineNo">251</span>        }<a name="line.251"></a>
<span class="sourceLineNo">252</span>        else if (method.equals(AUTH_METHOD.LOGIN))<a name="line.252"></a>
<span class="sourceLineNo">253</span>        {<a name="line.253"></a>
<span class="sourceLineNo">254</span>            // the server sends fixed responses (base64("Username") and<a name="line.254"></a>
<span class="sourceLineNo">255</span>            // base64("Password")), so we don't have to read them.<a name="line.255"></a>
<span class="sourceLineNo">256</span>            if (!SMTPReply.isPositiveIntermediate(sendCommand(<a name="line.256"></a>
<span class="sourceLineNo">257</span>                Base64.encodeBase64StringUnChunked(username.getBytes(getCharsetName()))))) { // Java 1.6 can use getCharset()<a name="line.257"></a>
<span class="sourceLineNo">258</span>                return false;<a name="line.258"></a>
<span class="sourceLineNo">259</span>            }<a name="line.259"></a>
<span class="sourceLineNo">260</span>            return SMTPReply.isPositiveCompletion(sendCommand(<a name="line.260"></a>
<span class="sourceLineNo">261</span>                Base64.encodeBase64StringUnChunked(password.getBytes(getCharsetName())))); // Java 1.6 can use getCharset()<a name="line.261"></a>
<span class="sourceLineNo">262</span>        }<a name="line.262"></a>
<span class="sourceLineNo">263</span>        else if (method.equals(AUTH_METHOD.XOAUTH))<a name="line.263"></a>
<span class="sourceLineNo">264</span>        {<a name="line.264"></a>
<span class="sourceLineNo">265</span>            return SMTPReply.isPositiveIntermediate(sendCommand(<a name="line.265"></a>
<span class="sourceLineNo">266</span>                    Base64.encodeBase64StringUnChunked(username.getBytes(getCharsetName())) // Java 1.6 can use getCharset()<a name="line.266"></a>
<span class="sourceLineNo">267</span>            ));<a name="line.267"></a>
<span class="sourceLineNo">268</span>        } else {<a name="line.268"></a>
<span class="sourceLineNo">269</span>            return false; // safety check<a name="line.269"></a>
<span class="sourceLineNo">270</span>        }<a name="line.270"></a>
<span class="sourceLineNo">271</span>    }<a name="line.271"></a>
<span class="sourceLineNo">272</span><a name="line.272"></a>
<span class="sourceLineNo">273</span>    /**<a name="line.273"></a>
<span class="sourceLineNo">274</span>     * Converts the given byte array to a String containing the hex values of the bytes.<a name="line.274"></a>
<span class="sourceLineNo">275</span>     * For example, the byte 'A' will be converted to '41', because this is the ASCII code<a name="line.275"></a>
<span class="sourceLineNo">276</span>     * (and the byte value) of the capital letter 'A'.<a name="line.276"></a>
<span class="sourceLineNo">277</span>     * @param a The byte array to convert.<a name="line.277"></a>
<span class="sourceLineNo">278</span>     * @return The resulting String of hex codes.<a name="line.278"></a>
<span class="sourceLineNo">279</span>     */<a name="line.279"></a>
<span class="sourceLineNo">280</span>    private String _convertToHexString(byte[] a)<a name="line.280"></a>
<span class="sourceLineNo">281</span>    {<a name="line.281"></a>
<span class="sourceLineNo">282</span>        StringBuilder result = new StringBuilder(a.length*2);<a name="line.282"></a>
<span class="sourceLineNo">283</span>        for (byte element : a)<a name="line.283"></a>
<span class="sourceLineNo">284</span>        {<a name="line.284"></a>
<span class="sourceLineNo">285</span>            if ( (element &amp; 0x0FF) &lt;= 15 ) {<a name="line.285"></a>
<span class="sourceLineNo">286</span>                result.append("0");<a name="line.286"></a>
<span class="sourceLineNo">287</span>            }<a name="line.287"></a>
<span class="sourceLineNo">288</span>            result.append(Integer.toHexString(element &amp; 0x0FF));<a name="line.288"></a>
<span class="sourceLineNo">289</span>        }<a name="line.289"></a>
<span class="sourceLineNo">290</span>        return result.toString();<a name="line.290"></a>
<span class="sourceLineNo">291</span>    }<a name="line.291"></a>
<span class="sourceLineNo">292</span><a name="line.292"></a>
<span class="sourceLineNo">293</span>    /**<a name="line.293"></a>
<span class="sourceLineNo">294</span>     * The enumeration of currently-supported authentication methods.<a name="line.294"></a>
<span class="sourceLineNo">295</span>     */<a name="line.295"></a>
<span class="sourceLineNo">296</span>    public static enum AUTH_METHOD<a name="line.296"></a>
<span class="sourceLineNo">297</span>    {<a name="line.297"></a>
<span class="sourceLineNo">298</span>        /** The standarised (RFC4616) PLAIN method, which sends the password unencrypted (insecure). */<a name="line.298"></a>
<span class="sourceLineNo">299</span>        PLAIN,<a name="line.299"></a>
<span class="sourceLineNo">300</span>        /** The standarised (RFC2195) CRAM-MD5 method, which doesn't send the password (secure). */<a name="line.300"></a>
<span class="sourceLineNo">301</span>        CRAM_MD5,<a name="line.301"></a>
<span class="sourceLineNo">302</span>        /** The unstandarised Microsoft LOGIN method, which sends the password unencrypted (insecure). */<a name="line.302"></a>
<span class="sourceLineNo">303</span>        LOGIN,<a name="line.303"></a>
<span class="sourceLineNo">304</span>        /** XOAuth method which accepts a signed and base64ed OAuth URL. */<a name="line.304"></a>
<span class="sourceLineNo">305</span>        XOAUTH;<a name="line.305"></a>
<span class="sourceLineNo">306</span><a name="line.306"></a>
<span class="sourceLineNo">307</span>        /**<a name="line.307"></a>
<span class="sourceLineNo">308</span>         * Gets the name of the given authentication method suitable for the server.<a name="line.308"></a>
<span class="sourceLineNo">309</span>         * @param method The authentication method to get the name for.<a name="line.309"></a>
<span class="sourceLineNo">310</span>         * @return The name of the given authentication method suitable for the server.<a name="line.310"></a>
<span class="sourceLineNo">311</span>         */<a name="line.311"></a>
<span class="sourceLineNo">312</span>        public static final String getAuthName(AUTH_METHOD method)<a name="line.312"></a>
<span class="sourceLineNo">313</span>        {<a name="line.313"></a>
<span class="sourceLineNo">314</span>            if (method.equals(AUTH_METHOD.PLAIN)) {<a name="line.314"></a>
<span class="sourceLineNo">315</span>                return "PLAIN";<a name="line.315"></a>
<span class="sourceLineNo">316</span>            } else if (method.equals(AUTH_METHOD.CRAM_MD5)) {<a name="line.316"></a>
<span class="sourceLineNo">317</span>                return "CRAM-MD5";<a name="line.317"></a>
<span class="sourceLineNo">318</span>            } else if (method.equals(AUTH_METHOD.LOGIN)) {<a name="line.318"></a>
<span class="sourceLineNo">319</span>                return "LOGIN";<a name="line.319"></a>
<span class="sourceLineNo">320</span>            } else if (method.equals(AUTH_METHOD.XOAUTH)) {<a name="line.320"></a>
<span class="sourceLineNo">321</span>                return "XOAUTH";<a name="line.321"></a>
<span class="sourceLineNo">322</span>            } else {<a name="line.322"></a>
<span class="sourceLineNo">323</span>                return null;<a name="line.323"></a>
<span class="sourceLineNo">324</span>            }<a name="line.324"></a>
<span class="sourceLineNo">325</span>        }<a name="line.325"></a>
<span class="sourceLineNo">326</span>    }<a name="line.326"></a>
<span class="sourceLineNo">327</span>}<a name="line.327"></a>
<span class="sourceLineNo">328</span><a name="line.328"></a>
<span class="sourceLineNo">329</span>/* kate: indent-width 4; replace-tabs on; */<a name="line.329"></a>




























































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